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MS Windows HOWTO
Docker and K8S
Linux HOWTO
HOWTO Misc
Networking
Preparing Managed Nodes
NextCloud
Docker Study Notes
Preparing Ansible Managed Nodes - shell script
#!/bin/bash rootpwd='Passw0rd!' remuser=devops devpass=redhat123 ansible all -e "ansible_password=$rootpwd" -u root -m user -a "name=$remuser state=present" ansible all -e "ansible_password=$rootpwd" -u root -m shell -a "echo $devpass | passwd --s...
Preparing Ansible managed nodes using playbook
--- - name: prep playbook for use with ansible-navigator hosts: all remote_user: root vars: ansible_password: 'Passw0rd!' remuser: devops rempass: redhat123 tasks: - name: create user {{ remuser }} user: name:...
Managing User/Group accounts from CLI
Facts myadmin - user account name mypassword - initial password configured for myadmin user mynewpassword - new password configured for myadmin user Administrators - name of local group with administrative privileges Description Command ...
Windows 11 - enable system hibernation after 60 min idle
Get power plan details cd %userprofile% powercfg /q > power.txt Show possible options to change powercfg /x /? Enable automatic system hibernation (when running on battery) after 60 min idle time. powercfg /x hibernate-timeout-dc 60...
Linux/Firefox and Intel GPU acceleration
Instructions for Fedora 39 Packages to remove libswscale-free Enable Free and Non-Free RPMFusion repositories https://rpmfusion.org/Configuration Packages to install ffmpeg-libs libva libvdpau openh264 x264-libs x265-libs gstreamer1...
Firefox - register telnet protocol handler
Create setting (boolean) network.protocol-handler.expose.telnet = false When triggering telnet handler for the first time, specify execute to launch for opening telnet sessions (e.g. securecrt, putty, etc.).
Linux/Firefox - Enable kinetic scrolling
about:config apz.gtk.kinetic_scroll.enabled = true
Calculate battery's Watt hours (Wh) and charging speed (W)
Calculate Battery's Watt hours Wh=( mAh / 1000 ) × V For example, battery with capacity of 4120mAh that operates at 10.8V has 44.50 Wh. Wh = 4120 / 1000 * 10.8 Wh = 44.50 Determine Battery charging speed Watt = Volts x Amps For example, device (...
UPS in Linux with apcupsd
apcupsd - a daemon for controlling most APC UPSes Facts Configuration file /etc/apcupsd/apcupsd.conf Systemd service name acpsupd Control system shutdown criteria With the configuration parameters below: UPS is queried eve...
/FreeBSD/ Managing Networking
Display IPv4 routing table netstat -r -4 -n Display IPv6 routing table netstat -r -6 -n